Manengon River

{{Infobox river

| name = Manengon River

| image =

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| source1_location =

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| subdivision_type1 = Country

| subdivision_name1 = Guam

| length = 14 km

| source1_elevation =

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| pushpin_map = Guam

| source1_coordinates=

| mouth_coordinates = {{Coord|13.3983333|144.7500000|source:GNIS|display=inline,title}}

}}

The Manengon River is a river in the United States territory of Guam.{{GNIS|1389858}} The Manengon River is the longest river in Guam.